Slug casting machine



J. H. HILPMAN' SLUG, CASTING MACHINE Sept. 9,1941.

Filed Aug. 3, 1940 7 Sheets-Sheet l [.{VVENTOR BY W I x I A 7 TORNEYS.

Sept. 9, 1941. J. H. HILPMAN SLUG CASTING MACHINE Sheets-Sheet 3 FiledAug. 3, 1940 147717 ALETQi Sept. 9, 1941. J. H; HILPMAN' 2,255,254

SQLUG CASQTING MACHINE I Filed Aug 5, 1940 '7 Sheets-Sheet 4 INIVENTOR AT E161 Sept. 9, 1941'. J. H. HILPMAN SLUG CASTING MACHINE Filed Aug. 3,1940 7 sheets-sheet a INVENTOR M{ ATTOR 5Y5.

Sept. 9, 1941. J. H. HILPMAN SLUG CASTING MACHINE Filed Aug. 3, 1940 '7Sheets-Sheet 7 v R Y WW E. m V .mww W,

ter kind in machines of this Patented Sept. 9, 1941 H E in:

assignor to corporation of New Mergenthaler York Application August 3,1940, Serial No.

Linotype Company, a

'43Claims. ;(01. 1994s) This invention relates to slug casting machines,such as Linotype machines of the general organization represented inUnited States Letters Patent to O. Mergenthaler No. 436,532, whereincirculating matrices and expansible spacebands are composed in line bythe manipulation of a keyboard, the composed line transferredto aslotted mold for the casting of a type bar or slug,

and the matrices and spacebands thereafter separated and returned .tothe magazines from which they started. More particularly, the inventionrelates to machines of this character equipped withouadding andcentering devices, in order that handle not only lines of full length asordinarlly, but in addition lines of less than full length (regardlessof their actual length) lines of the latcharacter being composed merelywith the matrices necessary the printed matter and indented at the leftor at the right end of the line or centered as desired.

A machine so constructed is disclosed in the rolander Patent No.1,971,400, datedAugust 28, 1934. In the machine therein disclosed themovable supports for the two line clamping jaws (the latter being madelong enough .to perform their required functions of closing themold slotat the front) are actuated through two distinct trains of connectionsfrom a vertically movable member controlled from the main shaft of themachine. When both jaw supports are connected to the member, they are,prior to casting, moved equidistantly toward each other until arrestedby'the contact of their respective jaws with the oppo site ends of thecomposed line (for centering) and later, after casting, restored to.their original positions of maximum separation. Due provision is madefor disconnecting either the righthand jaw or the left-hand jaw from theverti: callymovable member, so that one or the other may be operatedindependently for quadding at the right or at the leitas may be desired.When both jaws are disconnected, as they may be, the machine is free tofunction-in right-hand jaw being left normally stationary and theleft-hand jaw being adjustable by the customary devices. 'When'theclamping jaws are moved into contact with the composed line, the

vertically movable member is locked in its downwardly moved position bymeans of a toggle clamp actuated by a lost motion device included in theoperating connections and, after a casting operation, the toggleclamp isreleased, allowing the vertically movable member to ascend and restorefii only, the'line by a distributing mechanism" 1 the machine may.

the usual way, the

before. the line .the grip element .tuated upwardly the clamping jaws totheir positions of maximum separation.

An improvement upon the aforementioned toggle clamp is disclosed in theMead PatentNo. dated September '7, 1937, wherein the grip element isalloweda limited'deg'ree of movement while still in engagement with thevertically movable member to allow the latter to be ac- -for a smalldistance to permit the slight backing off of the line clamping jaws hasbeen lifted clear of the jaws, later (after the line has cleared thejaws) beingdisengaged from the vertically movable member to permit it toascend to its uppermost position and returnthe jaws to their positionsof maximum separation.

and Mead patents referred to, vcontemplate the closing of the jawsagainst the composed line under pressure and thereafter eifecting apositive separadistance for the free expansion of the spacebands injustifying the line, the justification pressure being sufficient (as tocompress to prevent metal squirts or J35 ,tice, however, to

It is notv the pracquadded lines, whether or not they contain spacebandsexcept in certain instances such as; for so-called straight-lineindention, when the jaws are backed off from line contacting position toabut against fixedwstops. In the absence ofjustification, the lineclosing pressure of the jaws is .not always great enough the. matricesinthe .line sufiiciently the production of hair lines on the cast slug.For example, the line clamping jaws are supported looselyenough sothat'under normalline closing pressure they may contact the end matricesof the line in a..tilted position and thus fail to engage the matricesthroughout their full height. This leaves .a space line tightly betweenthe jaws.

at one, or both .ends of the line between the end,

matrices and the matrix engaging faces of the jaws throughwhich. metalcan squirt when injectedinto the mold for casting, The other difficulty,the production of hair lines on the .slugs, maybe due to several causes,chief. among which is that arising from the fact that as .a result ofcontinued use the matrices warp or otherwise become bent, or in the caseof the thinner matrices they may not be straight even when new, and,hence, they do not stand in sidewise contact throughout their fullextent when composed in line and must be compressed into tight engagernent. If this were true of one or twomatrices closing pressure mightsqueeze the for connecting the jaw spreading power means to the leverfor actuating the vertically movable member;

Figs. 9 and 10 are comparative views of a portion of the justifyingmechanism and the means for disabling it;

Fig. 11 is a sectional View of the locking device for the verticallymovable member, taken on the line H-l I of Fig. 14 and looking in thequadding as usual and then apply a supplemen- 10 direction of thearrows; l pr s r hr h h j w m vme means to g. 12 is a view, partly inelevation and partly urge the aw inwardly from its line contacting insection and taken substantially on the line position to squeeze the linetight enough to insure I 2l2 of Fig. 14, of the ver tically movablememthe straightening and complete sidewise conher and its lockingdevice; tact of all matrices composed therein Such g. 13 is a sectionalview of the locking device line squeezing pressure also serves tostraighten similar to that shown in Fig. 12 but showing the t e Jaws sothat their matrix engaging faces parts in diiferent relative positions;make complete contact with the side faces of the Fig. 14 is a top planview of the locking device' end matrices. Fig 15 is a front elevation ofthe means for In carrying out the invention, the power meansconditioning the interponent for backing ofi the jaws from their linecontactg. 16 is a perspective view of some of the ns p s n 1s u d to pdu h qmslt parts of the conditioning means, showing them supplementalpressure, there being employed an in separated relationship; and adustable interponent which under one settm Fig. 17 is a side elevation ofa modified form connects the power means to the vertically mOv- 5 of jawclosing cam. able member to back off the aws for ustified The matrices Xand the expansible spacelines and which, under another setting, connectsbands Y are composed in line 111 the assembler e power means to thetoggle clamp for urging 1n the usual way, and trans erred to avertically e Jaws inwardly from line contacting posltlon movabletransportei or first elevator, which 0 Squeeze l' fi lines he nterponents thereupon descends to position the line b tween adius d m n l y to aphe power means the left hand aw E! and the light hand aw F selectivelyto perform either of its functions. A (Figs. 2, 9 and 10) and in frontof a slotted mold kin d vice 1s provided WhlCh normally is (not shown).The mold then advances from the operatlve o l k he hne iustlfyingmechanism rear and into contact with the line and with againstoperation, and this locking device also the two clamping aws for theslug casting opls controlled y h mterponent and rendered eration, theline, prior to casting, being aligned 1 Derat1ve when the aws are to bebacked off and justified 1n the same manner as when the for a linesplead. For regular machine operamachine is being operated under theusual conti n. p visi s mad f nd r n th lockin ditions After the slughas be n cast, the mold d f e in p ra ive during each cycle of the maiscarried from its horizontal casting position Fig. 2 is a front elevationmachine, showing certain of in Fig. 1; v

Fig. 3 is a view of some of the parts shown in;-- Fig. 1, illustratingthe operating connections for the vertically movable member and itslocking device;

Fig. 4 is a shown in Fig.

of a portion of the the parts included movable member;

Fig. 8 is a sectional view of the interponent 75.

each other to reoriginal positions of maximum the composed linepositioned turn them to their s parat onince between the jaws may varyin length, the actual extent of movement of the rod H will, of course,vary accordingly, and hence provision is made for such varied movementof the rod in its actuating connections, as will presently appear.

A suitable device, in the nature of a segmental grooved member H isprovided at theupper end of the vertically movable rod H for connectingthe jaws thereto, this grooved member being adjustable so as selectivelyto connect either or both jaws to the rod, as desired, for quadding ateither end of the line or for centering. The manner in which the memberis adjusted has no concern with the present invention and nothingfurther will be said about it here.

The rod H is slidable in suitable bearings B and B in the fixed frame.At its lower end, the rod H is connected by a link H to theforward endof a lever H having a hub portion H journalled on a pivot rod H carriedby a bracket 13 secured to the vise frame (Figs. 1, 3, 6 and '7). Fixedto and depending from the hub portion H is a barrel or cylinder Hcontaining an expansion spring H" pressing upwardly against a lug Hprojecting forwardly from the hub portion of a second lever H alsojournalled on the pivot rod H The lifting tendency of the spring H isresisted and overcome by the engagement of a stop lug 1-1 on the hubportion of the second lever H with a stop lug H formed on the hubportion of the firstlever E the effect of this arrangement being tocause the two levers to move in unison until the first lever is arrestedby the rod H as the jaw or jaws, whichever is connected thereto, banksagainst the composed line.

The second lever H is connected at its rear end by the roller and grooveconnection H to the forward end of a bent lever H journalled on apivoted rod H fixed in the main frame, a tension spring H beingconnected to the lever in advance of its pivot and serving constantly tomove it downwardly at its forward end. The lever at its rear end isprovided with a roller H 'tracking upon the periphery of an edge cam Mfast to the main shaft M of the machine.

From the foregoing construction, it will be seen of the cam M (which isalways which makes one complete rotation at each cycle of operation ofthe machine) is imparted the train of connections just described, tomove the rod first effect the inward or closing movement ofthe jaws Eand F, and then upwardly to eifect the outward or separating movement ofthe jaws. Since, as already stated, the downward movement of the rod Hwill vary according to the length of the composed line positionedbetween the jaws, its actuating connections must be arranged to yield asthe rotation of the cam continues, and this yielding isprovided for bythe lost motion which takes place between the two levers H and 1-1 thelatter acting on the former through the expansion spring H" which, ofcourse, will be compressed to absorb the lost motion. The lever H beingthus permitted to partake of a full rocking movement,- may be (as it is)positively connected to the cam operated lever H.

In order to lock the rod H in its downwardly moved position, there isprovided a toggle member J (see Fig. 11) enclosed within a box orhousing B 'which carries the bearing B before alluded to. This togglemember operates a clamp or grip element 5 arranged to contact with asleeve'H carried by the rod H and which, for purposes oi. the presentdescription, may be assumed to be integral'with the rod- 1-1. Associatedwith the toggle is an actuating link J provided at its upper end with anadjusting'screw J arranged to bear upon the toggle joint. At its lowerlink J is connected by a turn buckle link J (Figs. 1, 2, 3'and6) to theforward upwardly bent of the lever H before referred to. As will benoted, the link is slotted as at J ,'so as to straddle the toggle joint,being encircled within the box 7 spring J 6 which normally pressesupwardly through a pin or stud J' on the toggle joint to maintain thegrip element J? in inactive position. 7

It will now be seen that the toggle member J is operated by reason ofthe lost motion which takes place between the two levers H and H itbeing remembered that the former lever is the one connected to the rodH. In other words, after the lever H is arrested in its movement by thecessation in downward movement of the rod H (due, of course, to thecontact of the jaws E and F with the opposite ends of a composed line)the lever H continues to move to its full extent under the influence ofthe rotary cam M which acts in the meantime to continueits drawing downofthe link J The length of the link (or what amounts to the same thing,the position of the screw J thereon) is such that, during the lastportion of the movement of the lever H the screw is moved within the boxand caused to actuate the toggle member J so as thereby to press thegrip element J under heavy pressure against the sleeve H and lock therod H securely in its downwardly moved position.

Actually, the rod H and its sleeve H are not connected together as one,provision being made for a slight relative movement between the rod andthe sleeve after the latter has been locked by the toggle member in thedownwardly moved or line clamping position of the rod, in order to allowfor a limited line spread during justification. Referring particularlyto Fig. 12, it will be noted that at its loWer end, the rod H isprovided with a fixed collar in threaded on the rod and which containsan expansion spring h encircling the rod H and pressing upwardly on thelower end of the sleeve 1-1 This lifting tendency of the spring,however, in the downwardly moved position of the rod, will be resistedand overcome V rotatably mounted on the sleeve H at its upper end andarranged in position to engage a collar V fixed to the rod H. When thecam V is set with its high point in contact with the collar V it will,by reacting against the collar and over the opposition of the spring hhold the sleeve 1-1 in contact with the second collar h at the lower endof the rod. Under such a setting of' the cam, as will now be evident,there can be no relative movement between the rod and the sleeve, andthe two parts function as if they were rigidly united, which is thecondition that should exist when casting from lines without spacebands.On the other hand, when the cam V is set, say to bring its lowest pointinto contact with the collar V then the sleeve H in the downwardly movedposition of the rod H will be raised by the spring n out of engagementwith the collar h, and the clearance thus provided will determine theamount of the relative movement which can take place between the rod andsleeve after the locking of the latter by the toggle member J in themanner before described, This is a condition which should exist permitthe mairimum spread its lowest and highest points.

The cam V may be set either manually by adjustment of the arm V todifferent set posipresently appear, when tion, the link H is movedrearwardly after the sleeve H has been tained spacebands.

Going b ck to the actuating connections, the link H is connected by along tension spring M which controls the jaw closing and jaw openingmovements of the rod H.

As will be noted (Figs. 1 and 17), the relation of the two cams M and Mis such that, shortly after the former has be caused and rock the conandH clockwise to draw the the machine is in opera- 0 jourby the lever Hserving to locate the parts in their proper positions. In order to movethe link H forwardly to its original or normal position the link isprovided with a long rod H extending through the spring H and connectedat its rear end by a pin and slot connection H to the lever H he play ofthe pin and slot connection H is such that the actuating move ment ofthe lever H will always be transmitted necessary perhaps, the isslidably supported at its forward end in a bearing formed in a bracket Mattached to the fixed machine frame.

allow the line clamping jaw to the removal of the line. Accordingly, thegrip element J is formed with teeth 7' adapted to engage with teeth hvid be backed off for adapted by its rocking movement to force the blockJ inwardly or allow block J and the with grip element J from engagementh on the sleeve H to allow the drawal of the with the teeth latter torise and return the line clamping vjaws to their positions of maximumseparation.

The justification of the composed line is effected in the usual way byatwo-stage upward thrust of the bar K (Figs. .9 and 10) againstthe lowerends of the long or pendant wedge sections 1 of the spacebands Y to.force the sections upwardly between the matrices and expand the linetightly between the jaws E and F. Thebar K is carried at the upper endsof two spaced vertical rods K and K sliding in upper and lower bearingsB and B respectively, of the fixedframe B. Below the upper bearings Ethe rods K and K are formed with collars k and k respectively, and theends of two justification levers (one lever K only being shown) engagebeneath the collars k and k in raising .the rods and K successivelyduring justification. When spacebands Y are present in the composedline, they limit tion bar K can rise, but if without spacebands, the barof a full stroke, the upper limit of which is determinedby the bankingof the upper ends k .of the collars 7c and Te against the bearings B A5thus far described, the parts and their .operation, except ashereinafter noted, are or may be the same as set forth in theMergenthaler Patent No. 436,532, the Frolander Patent No. 1,971,400, andthe Mead Patent No. 2,092,220, all before referred to.

Coming now to the present improvements: The link H is not permanentlysecured to the jaw moving mechanism but is adapted to be .se-

the line is composed K is free to partake lectively connected theretoduring the machine 1 To this end, an interponent P (Figs. '7, 8 and 15)is provided at the forward end of the link H and the latter is pivotallymounted for vertical rocking movement on a pin 71. projecting from thesliding rod H terponent P presents a lower portion P provided with atooth p projecting from its bottomedge and adapted to engage with one oranother of three teeth h formed at the free end of the upstanding arm Hof the lever E H occupies its lower position. As best shown in Fig. 8,the interponent section P is carried by an adjusting screw P threadedintoa boss 12. the adjusting screw passing through a compression spring?between the inner end of the section 1? and the boss.

The adjusting screw P is formed with a knurled head 11 by which fit maybe turned manually, and is provided with a circular flange p notched at.spaced intervals in its periphery to receive holds the screw indifferent set positions. The purpose of the adjustable mounting of thesec tion P will be set forth hereinafter.

Normally, the link H and interponent P cupy a raised position as shownin Fig. 3 with the tooth p disengaged from the teeth h on thearm H beingheld up in that position by a lever Q (see particularly Figs. 1, 3, 4and 5) mounted to rock on a pivot Q}. When the jaw closing lever H ismoved to the position. shown in'Fig. 1, its idle position, a spring Q(Fig. 5) rocks the lever Q counter-clockwise (looking from the front ofthe machine) and a roller q carried by the lever engages the link H androcks it upwardly about its pivot clear of the teeth h Considering .onlythe structure thus far scribed, when the lever H is rocked downwardlybythe lever H to pull down on the-rod Hand effect thequaddingmovementofthe jaw (or the extent to whichithe justificae The'inwhen the link a leaf spring which H h to carry the .tooth p both"jaws when centering), the arm H rocks idly in a clockwise direction (asviewedin Fig. 3). Thereafter, as the lever H completes its stroke andeffects the locking of the rod H in its downwardposition, its forwardend engages the lever Q, overcoming the action of the spring Q androcking the lever Q clockwise (Fig. 5) to allow the link H to tooth .pof the interponent other of the teeth h on the arm H depending upon theextent to which the arm H hasbeen rocked. Subsequently, when the drawnrearwardly P with one or anrod H and move position to permit expansionofthe line by the spacebands during justification, all in accordancewith'the disclosure of the Frolander patent referred to.

Whenever aline of matrices is to bequadded (or centered) and expansionof the line by the not desired, the jaw spreading power mechanism ustdescribed is utilized to urge the jaw inward from linecontaotingposition to squeeze the 'line, For this purpose, an upperportion 7 of adetachable block P (Figs. 1, 3, 4, 6, '7, 8 and 15)provided with a shoulder 10 is adapted'toen gage the hooked end of anarm S when the link H is in its raisedposition. 'fter the quaddingmovement of the jaw has taken place, if the link H remains in its raisedposition (being prevented from dropping by means to be describedhereinafter), when it is moved rearwardly by the spring H it carries theblock P with it and imparts a longitudinal movement to the arm S, whicharm is free-to partake of such movement by virtue of a pin and slotconnection S by which it is supported at one side of the housing B Thefollowing end of the arm S is bent to provide a lip S arranged to engagein back of a hooked arm S pivotally suspended from thefree end of theaforementioned arrn'J (see Figs. 12, 13 and 14) The hooked arm S engagesa'roller S mounted on a fixed pinS between the housing B -and a member Swhich holds the arm S against sidewise-displacement; Hence, when the armS is moved rearwardly in themanner stated, the lip S engages and rocksthe hooked arrn S However, the roller S riding on the surface S of thehooked arm 8 cams the later downwardly and rocks the lever J fromtheposition shown in Fig. 13 to that shown in Fig. '12. This move? mentof the lever J forces the grip element J downwardly and, since thelatter is already inengagementwith the sleeve H", the sleeve also movesdownwardly, carrying the rod 'H with it and causingthe jaw to squeezethe composed line of matrices under the pressure of the spring H, whichpressure is and arrangement of the parts described. When the shaft H isreturned to its forward position, a spring S exercises itself to drawthearm S forward and allow the'hookedarm S to rock back to its originalposition as the lever J is raised by the grip element J in responsettothe expansion of the spring-7 When the composed line is squeezedinstead.

of expanded, the justifying mechanism is disabled by locking thejustification upward movement. Referring to Figs. 2, 9 and l0,two locksZ and Z are-provided to prevent both first and second 'jnstificationfromtaking place, alock being providedifor each of'the rods K .andK because.of the independent actuation drop and thus engege the of the interponentP in the form greatly multiplied by the form,

bar K against S, is placed under tension and the link Z is lowered toallow the weight Z to hold the locks Z and Z in their active positions.Hence, whenever the link H lower interponent portion P the lever arm Hto efiect the jaw spreading P allows the spring Z to contract and rockthe lever Z counter-clockwise (Fig. 3) to raise the link Z and throughthe levers Z and Z withdraw the locks Z and Z to their inactivepositions, so that justification can take place.

may be pointed out now that while there is a arm'e of the bell-crank Zand rocks it in a counter-clockwise direction (Fig. 10). This rocking ofthe bell-crank Z acts through the pin 2 to rock the bell-cranks Z in aclockwise direction and carry the locks Z and Z to their inactivepositions. After the casting operation, when the rod H is raised again,the weight Z Turning, now to the mechanism for ing the quadding deviceeither to spread the jaw V engage with when the link H is released bythe leposition. More speis in the position and the link H drawnrearwardly, the arm S is engaged by the and carried with it to rock thehooked arm S and grip element J thereby moving the the jaw inward fromsqueeze the line unand at der the multiplied pressure of the spring HBecause the link H and and block P remain in their raised positions, thelever Z is undisturbed (the block P merely moving fore-and-aftrelatively thereto) and the justification bar locks Z and Z remain intheir active positions to prevent justification. I

When the control lever T is adjusted to the intermediate notch tindicated as the setting for Min. spread (minimum spread), the block Toccupies its intermediate lateral position with the right hand portion1: only thereof in position to underlie the tooth p of the interponentP. With this setting of the block T, if the arm H is rocked clockwise(in Fig. 3) during the jaw closing movement sufficiently to carry therecess i forwardly beyond the tooth p, the top surface of the block Tbecomes eflective to maintain the link 1-1 in its raised position afterits release by the lever Q and bring about a line squeezing operationthrough the spring H On the other hand, if the rocking of the arm H isnot sufiithe top surface of the block effecallows the tooth p to clearthe block T and permit the link H to drop, thereby (l) engaging thetooth p with a tooth h on the arm H (2) allowing the spring Z to rockthe lever Z counterclockwise (in Fig. 3) to raise the link Z and movethe locks Z and Z to their inactive positions so that justification cantake place, and (3), when the spring H comes into operation, drawing thelinkH rearwardly and this time rocking thelever arm H counterclockwiseto raise the rod H and back OK the jaw or jaws from its or their linecontacting position or positions to permit the line to be expanded bythe spacebands. This action of the parts takes place only in the case oflines that are composed to within a predetermined extent short of fullline length such that the spacebands can expand full justified length.If it is inlength line, but for one reason or another the line has notbeen composed to within the predetermined range mentioned, then the jawmoves inwardly sufficiently before it contacts the line to bring the topsurface of the block T into position below the tooth p of theinterponent P and thus acts to maintain the link H in its raisedposition with the result that the subsequent operation of the linkthrough the spring H effects a line squeeze rather than the backing onof the jaw to its full line position. has been made to the fact that theportion P of the interponent tooth p is mounted on an adjusting screw.This is for the purpose of locating reference to the forward end of thetop surface of the block T to vary the extent to which the block must bemoved forward before the surface becomes efiective. In other words, if afull length line is thirty ems, the adjustment could be such that unlessthe jaw moved inward more than, say, three ems, the block T would not bemoved forward far enough to render the top surface effective and therecess 2& would allow the link H to drop and engage the tooth p with oneof the teeth hfi for rocking the arm H to back off the jaw to full lineposition. However, if the full length of the line were, say, fifteenems, the adjustment could be such that a jaw closing movement ofmore-than one and one-half ems would render the top surface of .theblock eifective to prevent the backing off of the jaw. Such a settingwould be required, too, if the machine were conditioned to cast a fullthirty em line or else tocenter theline, for in the latter case amovement of more'than one and one-half ems for each jaw would constitutea total movement or more than three ems for both jaws. From theforegoing, it will be clear that difierent adjustments of theinterponent section P can be made to vary the relationship of the toothp to the forward end of the block T to meet all requirements.

The third position of the control lever T i. e., in the notch tindicated as the position of Max-.4 spread (maximum spread), locates theblock .-T in its extreme left-hand position clear of the side edge ofthe tooth p. This is the setting employed when a line spread is desiredfor a quaddedline and is intended for use primarily in connection withthe so-called straight-line indention wherein the jaw is moved forquadding and, regardless of the actual length of thecomposed line, isbacked off to abut against a fixed stop and the line then expanded bythe spacebands to fill out the space between the jaws. Straight-lineindention is a recent development familiar to those versed in the artand suifice it to say that it is employed for casting successive quaddedlines sired the Mead Patent No. 2,166,170, dated July 18,1939.

It will now be clear that, regardless of whether or not spacebands arecontained in the composed line, the jaw spreading and justifying meansare both disabled and the supplemental line squeezing-pressure isapplied except for straight-line indentation or when casting from a linecomposed within a predetermined extent but of full line measure.

Whenever the machine is conditioned for quadding or centering and thecontrol lever T is set in the No spread position, the jaw spreadingcontrol arm V must be located in its upper position as shown in Fig. 12,its zero setting, so that the high point of the cam V engages the collarV and prevents relative movement between the-rod H and sleeve Hotherwise the line squeezing pressure will be ineffective, since it willberecalled that that pressure is applied through the sleeve H and, ofcourse, the sleeve and the rod H must be conditioned to move in unison.For straight-line indention, when the controllever T is set for Max.spread, the control arm V to engage the iow'point of the cam V with thecollar V andseparate the lower end of the sleeve Hi and the collar is toprovide for maximum relative movement between the sleeve and the rod Hfor backing oil": the jaw prior to justification. A like setting of thecontrol arm V is made when the control lever T is set in itsintermediate position for Min. spread. It is pointed out, however, thatwhile a single cam V has been shown in the drawings, a difierent andquick acting cam is employed for minimum spread, because the relativemovement (maximum) between the rod provided for by the cam V must bereduced completely in response to a three em inward movement-only ofthe'jaw from its full line position. Actually, the commercial equipmentembodying the present improvements includes but a single cam V, adaptingthe machine either for No spread and Maximum spread or else for Nospread all three, and for this reason the single cam has been sh0wn.-However, contemplates the-provision of quick detachable interchangeablecams, or-a shiftable multiplecam;

of uniform length, but see if deis set in its lowermost position.

H and the sleeve H and flviinimum spread, but not for the presentinvention' engage the grip H As the roller line squeezing movement ofthe jaw, as the case may be. Thereafter, the roller the high portion mappended claims.

Having thus described my invention, what I claim is:

slug casting machine including, in combia pair l. A nation, of lineclamping aws movable wardly to squeeze the line.

A s! bination,

5. A combination according to claim 4, wherein "the selective operationsof said means is conincluding a vertically movable rod for one towardthe cluding a vertically movable rod for effecting such quaddingmovement of the jaw, means for locking the rod to hold the jaw in itsline contacting position, and means for applying a line squeezingpressure on the jaw through said rod locking means.

7. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanism suchquadding movement of the jaw, a locking device engageable with said rodto hold the jaw in its line contacting position, said locking devicebeing movable when in engagement with the rod,

and pressure applying means acting on said looking device and the rod tourge the jaw inwardly from its line contacting position for squeezingthe line.

8. A slug casting machine including, in combination, a pair of lineclamping jaws movable other in quadding, mechanism including avertically movable rod for effecting such quadding movement of the jaw,a locking device engageable with said rod to hold the jaw in its linecontacting position, said locking device when in engagement with therod, and pressure said locking device and the rod before casting to urgethe jaw inwardly from its line contacting position for squeezing theline and after casting to relax the pressure on the jaw before the lockis released.

9. A combination according to claim 6, wherein the pressure applyingmeans comprises a train of connections actuated by a cam on the mainshaft of the machine.

10. A combination according to claim 6, wherein the pressure applyingmeans comprises a train of connections actuated by a cam on the mainshaft of the mac he, and including a movable-interponent for disablingsaid train of connections at will.

11. A combination according to claim 6, wherein the pressure applyingmeans comprises a train of connections actuated by a cam on the mainshaft of the machine, and including a movable interponent controlledautomatically by the extent of quadding movement of said rod fordisabling said train of connections.

- 12. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, a train ofconnections between said jaw and the main cam shaft of the machine foreffecting the quadding movement of the jaw, and a second train ofconnections between the jaw and said cam shaft for applying a linesqueezing pressure on the jaw when in quadding position.

13. A combination according to claim 12, wherein some of the elements ofsaid trains of connections are common to both trains.

14. A combination according Y to claim 12, wherein said trains ofconnections include a vertically movable rod connected to the jaw andcommon to both of said trains, and including means to prevent actuationof the rod through the last mentioned train of connections when a linesqueeze is to be avoided. v

15. A combination according to claim 12, wherein said trains ofconnections include a ver- 7 common. to. both automatic means controlledby the extent of tically movable rod connected to the jaw and of saidtrains, and including movement of the rod to prevent the actuation ofsaid rod through the last mentioned train of connections when a linesqueeze is to be avoided.

Q 16. A combination according to claim 12, wherein said trains ofconnections include a vertically movable rod connected to the jaw andcommon to both of said trains, and including a movable interponentadapted in one position to establish one connection between, the secondmentioned train of connections and the rod to .move the rod in onedirection for spreading the jaws, and in another position to establish adifferent connection between said train of connections and the rod tomove the rod in the opposite direction to urge the jaws inwardly forsqueezing the line.

17. A combination according to claim 12, wherein said trains ofconnections include a vertically movable rod connected to the jaws andcommon to both of said trains, and including a movable interponentadapted in one position to establish one connection between the secondmentioned train of connections and the rod to move the rod in onedirection for spreading the jaws, and in another position to establish adifferent connection between said train of connections and therod tomove the rod in the opposite direction to urge the jaws inwardly forsqueezing the line, and an element adjustable to differentset positionsrelatively to said interponent and adapted thereby to control theposition of the interponent.

18. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanismincluding a vertically movable rod and .a sleeve mounted on and movablewith the rod in effecting the quadding movement of the jaw, means forlocking the sleeve and rod when the jaw is in its quadding position,means for permitting a relative movement between the rod and sleeve, andpressure applying means selectively connectable to the rod and to thelocking means, said pressure applying means when connected to the rodbeing operative to effect a movement of the rod relatively to the sleeveto back. off the jaw from its quadding position to permit the line to beexpanded by spacebands to a corresponding extent, and being operativewhen connected to the, locking means to eifect a movement of the sleeveand rod in unison to urge the jaw inwardly to squeeze the line. i

, 19. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanism foreifecting such quadding movement of the jaw, automatic means operable,under one condition, to move the jaw outwardly a limited distance fromits line contacting position to permit theline to be expanded byspacebands to a correspondingextent and, under another condition, tourge the jaw inwardly to squeeze the line, justifying means forexpanding the spacebands, and an automatic locking device for permittingthe operation of the justifying means under said first mentionedcondition and for preventing its opsaid second condition.

1 A slug casting bination, a pair of line clamping aws movable urge thejaw inwardly to squeeze the line, justifying means for expanding thespacebands, a locking device normally operative to prevent the means forreleasing the locking device during the machine operation to permitjustification to take place except when said mechanism is conditioned tosqueeze the line.

22. A combination according to claim 21, in-

cluding other means for releasing said locking line contacting position,said locking device being movable when in engagement with the rod, aspring controlled in its operation from the main ing device and the rodto urge the jaw inwardly from its line contacting position for squeezingthe line.

24. A combination according to by said spring.

25. A combination according to claim 23,

spring, a swinging lever actuable by the movement of said arm andpivoted to a second levere engageable with said locking device, andincluding a camming element arranged to be engaged by said swinginglever and as the latter swings effect a rectilinear movement thereof forrocking said second lever to depress the looking device.

. 26. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanismincluding a vertically movable rod for effecting such line contactingmovement of the jaw, pressure means operative thereafter through saidrod either to back ofi the jaw to permit expansion of the line byspacebands or to urge the jaw inwardly to squeeze the line, a movableinterponent for selectively connecting said pressure means to said rodto perform one or the other of saidfunctions, and a manually adjustableblock adapted tobe moved into and out of the path of said interponent toprevent or permit movement of the latter in controlling the selectivefunctioning of said pressure means.

27. A combination according to claim 26,

ment of said rod.

29. A combination according to claim 26,

ment of the interponent and thus selectively con- 31. A slug castingmachine including, in combination, a pair of line clamping jaws movableone toward the other in quadding,

locking device for locking is in contact'with the line;

controlled from the main cam shaft of the machine and connectable tosaid short lever or to said locking device respectively to move the rodfor backing off the jaw to permit expansion of the line by spacebands orfor urging the jaw inwardly to squeeze the line, a vertically movableinterponent normally maintained by a swinging lever in a raised positionfor connecting the spring pressure means swinging lever being supportedby said longer lever to maintain the interponent in its raised positionand being released by the jaw closing movement of said longer lever topermit the interponent to drop to a lower postion for connecting thespring pressure means to said short lever.

32. A combination according to claim 31, including a block carried bysaid short lever, the block being arranged to underlie said interponentand being adjustable to any one of three set positions, said block beingformed with a top surface having a recess cut in one corner of itsforward edge and the block, in one set position, standing clear of theinterponent to permit movement of the latter for connecting the pressuremeans to said vertically movable rod to back off the jaw and, in asecond position, having the unrecessed portion of its surface underliethe interponent to prevent movement thereof and maintain the connectionbetween the pressure means and said rod for urging the jaw inwardly tosqueeze the line and, in a third position, being located with therecessed portion of its surface underlying the interponent, whereby therecess allows the interponent to drop to connect the spring pressuremeans to the short lever to back off the jaw when the jaw closingmovement of the short lever is insufficient to move the block so thatthe unrecessed portion thereof underlies the interponent and maintainsit in its raised position.

33. A slug casting machine including, in combination, a pair of lineclamping jaws, justifying mechanism for expanding a composed line ofmatrices between the jaws by spacebands, means for moving said jawstoward one another in quadding, and an automatic locking deviceindependent of the line for locking the justifying mechanism to renderit inoperative to expand the line when the latter is quadded.

34:. A slug casting machine including, in combination, a pair of lineclamping jaws, justifying mechanism for expanding a composed line ofmatrices between the jaws by spacebands, said mechanism including a barengageable with the spacebands and mounted on two vertically movablerods, means for moving said rods independently of one another duringjustification, means for moving said jaws toward one another inquadding, and an automatic locking device for looking both of saidvertically movable rods to prevent justification of the line when thelatter is quadded.

35. A combination according to claim 33, wherein said locking device isnormally operative to prevent justification, and including means forrendering the locking device inoperative during regular machineoperation.

36. A combination according to claim 34, wherein said locking devicepermits a limited movement of said justifying bar for the purposestated.

37. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanism foreffecting such quadding movement of the jaw,

to the locking device, said,

means for urging said jaw inwardly from its line contacting position tosqueeze the line, justifying mechanism for expanding the line betweenthe jaws by spacebands, and automatic means to lock the justifyingmechanism against operation when the line squeezing means is active.

38. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanism foreffecting such quadding movement of the jaw, automatic means operable,under one condition, to move the jaw outwardly a limited distance fromit line contacting position to permit the line to be expanded byspacebands to a corresponding extent and, under another condition, tourge the jaw inwardly to squeeze the line, justifying mechanism forexpanding the spacebands, and automatic means to lock the justifyingmechanism against operation when a line squeeze is applied and to permitits operation when the jaw is moved outwardly from line contactingposition.

39. A combination according to claim 37, wherein the justifyingmechanism includes a bar engageable with the spacebands and mounted ontwo independently actuable vertically movable rods, and wherein twolocks are provided, one for each rod, to prevent the independentactuation thereof.

40. A combination according to claim 38, wherein said locking means isnormally active to prevent justification, and is automatically renderedinactive for regular machine operation and when the jaw is movedoutwardly from its line contacting position in quadding.

41. A combination according to claim 38,

wherein said locking means when active permits a limited movement ofsaid justifying bar for the purpose stated.

42. A slug casting machine including, in combination, a pair of lineclamping jaws movable one toward the other in quadding, mechanism foreffecting such quadding movement of the jaw including a verticallymovable rod, automatic means operable through said jaw moving rod, underone condition, to move the jaw outwardly a limited distance from itsline contacting position to permit the line to be expanded by spacebandsto a corresponding extent and, under another condition, to urge the jawinwardly to squeeze the line, said means including a spring controlledfrom the main cam shaft of the machine and a movable interponent forselectively connecting the spring to one or the other of two trains ofconnections leading to the jaw moving rod, a justification barengageable with the spacebands and mounted on two independently actuablevertically movable rods, two locks normally engaged one with each ofsaid bar supporting rods to prevent the actuation thereof, the locksbeing connected to one another to operate in unison, and connectionsbetween said interponent and the locks to control their release by themovement of the interponent, whereby the locks are rendered active toprevent justification when a line squeezing connection with the jawmoving rod is established by said interponent and are released to permitjustification when the interponent is moved to establish a connectionwith the jaw moving rod to move the jaw outwardly from its linecontacting position.

43. A. combination according to claim 42, including means for effectingthe release of said locks by the idle movement of said jaw movin rodduring regular machine operation.

JOHN H. HILPMAN.

